nushell/crates/nu-command/src/date/humanize.rs
2024-07-06 19:27:55 -07:00

107 lines
2.8 KiB
Rust

use crate::date::utils::parse_date_from_string;
use chrono::{DateTime, FixedOffset, Local};
use chrono_humanize::HumanTime;
use nu_engine::command_prelude::*;
#[derive(Clone)]
pub struct SubCommand;
impl Command for SubCommand {
fn name(&self) -> &str {
"date humanize"
}
fn signature(&self) -> Signature {
Signature::build("date humanize")
.input_output_types(vec![
(Type::Date, Type::String),
(Type::String, Type::String),
])
.allow_variants_without_examples(true)
.category(Category::Date)
}
fn usage(&self) -> &str {
"Print a 'humanized' format for the date, relative to now."
}
fn search_terms(&self) -> Vec<&str> {
vec![
"relative",
"now",
"today",
"tomorrow",
"yesterday",
"weekday",
"weekday_name",
"timezone",
]
}
fn run(
&self,
engine_state: &EngineState,
_stack: &mut Stack,
call: &Call,
input: PipelineData,
) -> Result<PipelineData, ShellError> {
let head = call.head;
// This doesn't match explicit nulls
if matches!(input, PipelineData::Empty) {
return Err(ShellError::PipelineEmpty { dst_span: head });
}
input.map(move |value| helper(value, head), engine_state.signals())
}
fn examples(&self) -> Vec<Example> {
vec![Example {
description: "Print a 'humanized' format for the date, relative to now.",
example: r#""2021-10-22 20:00:12 +01:00" | date humanize"#,
result: None,
}]
}
}
fn helper(value: Value, head: Span) -> Value {
let span = value.span();
match value {
Value::Nothing { .. } => {
let dt = Local::now();
Value::string(humanize_date(dt.with_timezone(dt.offset())), head)
}
Value::String { val, .. } => {
let dt = parse_date_from_string(&val, span);
match dt {
Ok(x) => Value::string(humanize_date(x), head),
Err(e) => e,
}
}
Value::Date { val, .. } => Value::string(humanize_date(val), head),
_ => Value::error(
ShellError::OnlySupportsThisInputType {
exp_input_type: "date, string (that represents datetime), or nothing".into(),
wrong_type: value.get_type().to_string(),
dst_span: head,
src_span: span,
},
head,
),
}
}
fn humanize_date(dt: DateTime<FixedOffset>) -> String {
HumanTime::from(dt).to_string()
}
#[cfg(test)]
mod test {
use super::*;
#[test]
fn test_examples() {
use crate::test_examples;
test_examples(SubCommand {})
}
}